Harden workflow token permissions, pin github-script SHA, and add CodeQL workflow config

[Copilot]

📝 Summary of Changes

This PR addresses security findings for GitHub Actions workflow hardening: missing explicit token permissions and an unpinned action reference. It also adds a CodeQL workflow that uses the repository’s CodeQL config file for path exclusions.

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Changes Made

• Updated workflow permissions:
  • .github/workflows/copilot-dco.yml with:
    • checks: write
    • pull-requests: read
  • .github/workflows/markdownlint-cli2.yml with:
    • contents: read
• Refactored action pinning in .github/workflows/auto-label-bugs.yml:
  • actions/github-script@v7 → actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
• Added .github/workflows/codeql.yml to run CodeQL on push, pull_request, and weekly schedule, with explicit permissions and pinned CodeQL actions
• Added workflow reference to existing repo config:
  • config-file: ./.github/codeql-config.yml

Example pinned-action change:

uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1

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Checklist

Please ensure the following before submitting your PR:

• I have reviewed the project's contribution guidelines.
• I have written unit tests for the changes (if applicable).
• I have updated the documentation (if applicable).
• I have tested the changes locally and ensured they work as expected.

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Screenshots or Logs (if applicable)

N/A (workflow configuration changes only)

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👀 Reviewer Notes

• Scope is intentionally narrow: only the workflows called out by security findings plus the requested codeql.yml addition.
• All newly introduced third-party action references in touched files are pinned to full SHAs.

[kubestellar-prow]

Hi @Copilot. Thanks for your PR.

I'm waiting for a kubestellar member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

I understand the commands that are listed here.

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Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.

[kubestellar-prow]

Thanks for your pull request. Before we can look at it, you'll need to add a 'DCO signoff' to your commits.

📝 Please follow instructions in the contributing guide to update your commits with the DCO

Full details of the Developer Certificate of Origin can be found at developercertificate.org.

The list of commits missing DCO signoff:

• bb0672a Initial plan

Details

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository. I understand the commands that are listed here.

[kubestellar-prow]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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